The Court of Criminal Appeals in Knoxville ruled a statute that gives the Tennessee Bureau of Investigation $250 for DUI convictions obtained using a blood or breath test is unconstitutional, The Tennessean reports. The decision came from a DUI case in which a woman argued her blood test should be suppressed because the fee system violated her right to a fair trial and gave the TBI financial motivation to rack up convictions. Her case was among more than 20 other cases involving defendants who gave blood or breath samples.